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Increasing the maximum number of TCP/IP connections in Linux
...me reason, I could not add more than 28230 sessions without adding lots of sleep in one go, with no errors seen either in php or on redis logs. We broke our heads on this for an entire day till I thought maybe problem is not with php/redis but in the tcp/ip layer connecting the two and came to this ...
C++ Lock-free Hazard Pointer（冒险指针） - C/C++ - 清泛网 - 专注C/C++及内核技术
...障和线程本地存储优化。如果仔细观察，可以发现 Acquire 函数中使用顺序一致性内部屏障 pointer->target_ = ...，x86 平台上会翻译为 mfence 指令，与 lock add 指令相比也不遑多让。在读多写少的前提下，可以将读写两边的屏障替换为非...
Duplicate ID, tag null, or parent id with another fragment for com.google.android.gms.maps.MapFragme
...ce the application isn't necessarily completely shut down (but just put to sleep in the background), the previous code i submitted would fail upon restarting the application. I've updated the code to something that works for me, both going in & out of the map and exiting and restarting the appli...
Accessing Session Using ASP.NET Web API
...r WebApi.
You can easily test this out for yourself by just putting Thread.Sleep(5000) in a WebAPI method and enable Session. Run 5 requests to it and they will take a total of 25 seconds to complete. Without Session they'll take a total of just over 5 seconds.
(This same reasoning applies to Signal...
String output: format or concat in C#?
..." + (cElapsedMilliseconds) + "ms - " + (cElapsedTicks) + " ticks");
Thread.Sleep(4000);
Those are my results:
1000000 x result = string.Format("{0} {1}", p.FirstName, p.LastName); took: 618ms - 2213706 ticks
1000000 x result = (p.FirstName + " " + p.LastName); took: 166ms - 595610 ticks
...
Need to understand the usage of SemaphoreSlim
...That's part of the job of the task scheduler. Tasks != threads. The Thread.Sleep in the original code would devastate the task scheduler. If you're not async to the core, you're not async.
– Joseph Lennox
Feb 17 '15 at 19:56
...
Python subprocess.Popen “OSError: [Errno 12] Cannot allocate memory”
...mory footprint is minimal), to spawn a shell script that then runs free/ps/sleep and whatever else in a loop parallel to your script; poll the script's output or read it synchronously, possibly from a separate thread if you have other stuff to take care of asynchronously -- do your data crunching in...
Volatile Vs Atomic [duplicate]
... of running (sometimes it did stop)...,
– Plain_Dude_Sleeping_Alone
Dec 24 '15 at 22:23
1
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PHP DateTime::modify adding and subtracting months
...so roll back to Feb 28th and April 30th in the first set) and not lose any sleep over the occasional overlap and divergence from the "last day of month" vs "second to last day of month" pattern. But expecting the library to choose between "most pretty/natural", "mathematical interpretation of 02/31 ...
Calling shell functions with xargs
...
Something like this should work also:
function testing() { sleep $1 ; }
echo {1..10} | xargs -n 1 | xargs -I@ -P4 bash -c "$(declare -f testing) ; testing @ ; echo @ "
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